... including targeted forecasts at the time of your arrival to each point!
Interstate I-5 is the main arterial interstate for the west coast of the United States. It runs north-south from Blaine, Washington, to Chula Vista, California (near San Diego). It is the only interstate in the US that connects from a border crossing of Canada to a border crossing of Mexico. Along the way, it crosses through the states of Washington, Oregon, and California, running 1,381 miles in length.
Interstate I-5 passes through many of the largest cities of the west coast. It passes through Seattle, Washington, Portland, Oregon, and Sacramento, Los Angeles, and San Diego, California. At the San Ysidro Port of Entry at the Mexico border, over 70,000 vehicles cross the border every day. At the northern border, at the Peach Arch Border Crossing into Canada, about 4,800 cars cross the border every day (trucks are prohibited at this crossing and must cross the Pacific Highway Border Crossing roughly one mile to the east).
The Pacific Northwest experiences heavy rainfall throughout the year, as a natural rainforest climate zone stretching from the Canadian border, through Washington, and ending south of Portland, Oregon. Rainfall plus snowfall in some areas average up to 167 inches of rain each year. Heavy fog is also common throughout this area.
Between the border of Oregon and California, I-5 crosses its highest point over the pass of Siskiyou Summit. The pass sits 4,310 feet above sea level and the pass experiences a 2,300 foot elevation change within a 6 mile span. Heavy snow is common from November through April.
This map shows the current & 7-day weather forecast, road conditions, and weather radar for all of US interstate I-5.